Speaker box



FIG. 1 is a perspective view of a speaker box showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Even broken lines depicted in FIGS. 1-5 are for illustrative purpose only and form no part of the claimed design. The dot-dash broken lines depicted in FIGS. 1-5 define, but are not included in, the boundaries of the claimed design. 

The ornamental design for a speaker box, as shown and described. 